TASK 51 slice 5: webcam Background section in the Layers properties — Remove/Blur PillToggles (radio-exclusive) + Strength slider; strength changes never blank the webcam (new variant inherits the same-effect frame + bitmap). TASK 51 built (Unit: bg-effects UI)

2026-10-09 10:31:11 -07:00
parent de22983b36
commit 352f117cb2
11 changed files with 169 additions and 49 deletions
@@ -663,6 +663,13 @@ This replaces the old five-seeder cluster (`Seed{Starting,Brb,Ending,Chat}Backgr
  per pixel) — the first naive per-pixel 2-D bilinear cost 46/80 ms. `CameraManager` logs the real
  average once per session after 120 processed frames (`startup.log`: "background effects avg …").
  `MainViewModel.PersonSegmenterOverride` is the hermetic-test seam.
+- **UI (slice 5, creator spec 2026-10-09):** the webcam's properties in the Layers panel
+  (`Controls/LeftPanel.xaml`) gain a **Background** section — two `PillToggle` switches, Remove and
+  Blur, bound to `RemoveBackground`/`BlurBackground` (radio-exclusive: one on turns the other off,
+  turning the active one off = None) and a Strength slider (0..1, 5% snaps, visible only while an
+  effect is on; Blur = amount, Remove = edge softness). Dragging the slider never blanks the webcam:
+  a new strength variant inherits the dropped same-effect variant's last frame + bitmap
+  (`CameraManager.SyncVariants`), and the VM keeps the shown bitmap until the new one renders.
 - **Tests:** `BackgroundEffectEngineTests` — the Remove integration test (fake segmenter), and a
  model contract test that runs the BUNDLED model through the C# preprocessing on a fixture and
  matches the MediaPipe-produced reference mask (≥99.5% agreement; fixture = MediaPipe's public test